There are people who are "wired differently" but as with many things, there's majority who insist they are and it's the source of their failings don't actually have a major issue.

It's a similar thing with dieting, the number of people who have gone to the trouble of actually counting every calorie they eat, restricting themselves to a certain amount to lose weight, and not lost weight is pretty small. But the number who tell themselves that they've done it is much higher.